00:01
Here we have the equation, m equals 2 thirds, or m plus 2 thirds, i'm sorry, m plus 2 thirds equals negative 1 third.
00:11
Okay, so currently 2 thirds is being added to m, so i want to undo that.
00:15
I'm going to subtract 2 thirds from both sides of the equation, and so i end up with just m on this side, because 2 thirds minus 2 thirds is 0, so i could say plus 0, but we don't need to say that.
00:27
So i just end up with m.
00:29
And then negative 1 third minus 2 thirds.
00:33
Well, if i think of this on the number line, i'm at negative 1 third, and i'm going minus 2 thirds.
00:42
I'm going to end up at negative 3 thirds, which is the same thing as negative 1.
00:49
Let's check that that is actually the solution of this.
00:52
So i'm going to substitute negative 1 back in here for m...